Aviation Accident Summaries

Aviation Accident Summary BFO91LA014

LOUISVILLE, KY, USA

Aircraft #1

N9280F

HUGHES 269C

Analysis

THE PILOT WAS PATROLLING A PIPELINE WHEN THE ENGINE LOST POWER. HE DID AN AUTOROTATION LANDING IN AN OPEN FIELD. THE INVESTIGATION REVEALED THE NUMBER ONE CYLINDER CONNECTING ROD CAP HAD FRACTURED. METALLURGICAL EXAMINATION OF THE FRACTURE SURFACE REVEALED A FATIGUE CRACK HAD ORIGINATED FROM A GALLING MARK ON THE BEARING SURFACE OF THE ROD. THE ENGINE WAS OPERATED 39 HOURS SINCE IT WAS LAST OVERHAULED.

Probable Cause and Findings

FATIGUE FAILURE OF THE NUMBER 1 CYLINDER CONNECTING ROD.

 

Source: NTSB Aviation Accident Database

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